Collector's Notes: The "Professor Program" Voltorb Reverse Holofoil card is arguably one of the scarcest card variations in the 151 Expansion if not one of the rarest English Pokemon cards ever printed.
One of two exclusive cards awarded to select staff members at the Pokemon NAIC (North America International Championship) who successfully answered Pokemon mechanical game questions called "Voltorb Drills" by a TCG mentor, it is rumored that less than 125 cards of this Reverse Holofoil Voltorb card.
There is a companion Cosmos Reverse Holofoil variation to this card.